Granted Patent
Utility
US 5,563,232 · App. 08/385,017
Rim process utilizing isocyanates based upon 2,4'- and 4,4'-diphenylmethane diisocyanate
Inventors:
Michael Hurley, Robert Eiben
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Feb 7, 1995
Inventors
Michael Hurley
Robert Eiben
Assignee (at issue)
Bayer Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.